Man Made (Synthetic Rock)

Concrete with Exposed Aggregate

Anthropogenic conglomerate (Concrete)

Gemstone jewelry ensemble

Likely mixed gemstone and glass-bead jewelry; exact stones cannot be determined from the image

Polished dendritic agate or jasper

Microcrystalline quartz (SiO₂), likely chalcedony with iron/manganese dendrites

Iron Slag (Industrial Byproduct)

Anthropogenic Vitrification Product/Ferrous Slag

Mystic Topaz (Treated Quartz or Topaz)

Aluminum silicate fluoride hydroxide [Al2SiO4(F,OH)2] with thin-film metallic coating

Sandstone Concretion

Limonitic Sandstone Concretion

Blue Goldstone

Synthetic Aventurescent Glass (Cobalt-doped soda-lime glass)

Vesicular basalt (probable iron-rich volcanic rock)

Basalt; chiefly plagioclase, clinopyroxene, olivine, and Fe-Ti oxides

Asphalt (Bituminous Concrete)

Bituminous mix / Anthropogenic conglomerate

Synthetic Costume Accessory (Non-Geological)

Polyester and Acrylic Fiber (Anthropogenic polymer)

Asphalt (Bituminous Concrete)

Bituminous mix containing aggregates and petroleum-based binder (CnH2n+2)

Crushed Stone (Likely Limestone or Granite)

Calcium Carbonate (CaCO3) for Limestone / Quartz and Feldspar for Granite

Terrazzo (Synthetic Composite Rock)

Cementitious or Epoxy Resin-bound Aggregates

Baked-clay ceramic fragment (likely brick or pottery)

Fired clay, primarily aluminosilicate minerals; not a natural rock

Slag

Ferrous Slag (Amorphous calcium-magnesium-aluminum silicates)

Sandstone Concretion

Clastic sedimentary rock (primarily Quartz SiO2)

Orgonite Pyramid (containing Amethyst and mixed minerals)

Silicon Dioxide (SiO2) in synthetic resin

Red glass-like crystal, likely synthetic ruby or red glass

Uncertain from image; possible corundum (ruby), Al₂O₃, or synthetic glass

Cullet Glass (Slag)

Amorphous Silicon Dioxide (Man-made)

Green Sea Glass

Man-made silicate glass (weathered)

Cullet Glass (Slag Glass)

Amorphous Silicon Dioxide (Industrial Man-made)

Sandstone Concretion

Clastic Sedimentary Rock (primarily SiO2 with mineral cement)

Goldstone (Brown)

Aventurine glass

Jewelry Chain with Blue and Clear Gemstones (Likely Cubic Zirconia)

Cubic Zirconia (ZrO₂), Silver or White Gold/Platinum Alloy

Red gemstone ring, likely garnet or synthetic ruby

Possibly almandine garnet (Fe₃Al₂(SiO₄)₃) or corundum/ruby (Al₂O₃); image alone cannot distinguish

Chert Arrowhead (Projectile Point)

Microcrystalline Quartz (Chert or Flint)

Slag Glass

Vitreous Silicate Residue

Slag (Industrial Glass/Glassy Rock)

Anthropogenic Vitreous Material

Opalite (Man-made Glass)

Fused glass (typically made of dolomite and metal opacifiers)

Chert Concretion (with typical hematite/limonite staining)

Sedimentary Concretion (SiO2 with FeO(OH)⋅nH2O)

Asphalt Concrete

Bituminous Concrete

Titanium Aura Quartz

Titanium bonded Silicon Dioxide (SiO2 + Ti)

Mounted clear gemstone, likely cubic zirconia

Cubic zirconia (zirconium dioxide, ZrO₂), synthetic; exact stone cannot be confirmed from the image

Green sea glass (likely bottle glass)

Man-made soda-lime silicate glass; not a natural mineral

Green sea glass (likely bottle glass)

Man-made soda–lime silicate glass; not a natural mineral

Aura Quartz (Titanium Quartz)

Titanium-coated Silicon Dioxide (SiO2 + Ti)

Clear quartz fragment (rock crystal)

Quartz, silicon dioxide (SiO₂)

Red Slag Glass

Amorphous Silica (Industrial byproduct with metallic oxide dopants)

Concrete

Anthropogenic Sedimentary Conglomerate (Cement mixture: typically Ca2SiO4, Ca3SiO5, Ca3Al2O6)

Polished obsidian

Volcanic glass; predominantly rhyolitic SiO₂

Goldstone (Brown/Gold variety)

Aventurine Glass (SiO2 with Copper inclusions)

Blue Obsidian

Volcanic Glass (SiO2 with inclusions)